Before BikerFry’s gotta reach through the monitor and choke a ricer, here are a few things to consider:
-If Schmidts sprayed oil on your exhaust, your car would smell like burning oil.
-Yes, if your muffler or piping has a hole in it then it’s time to replace it.
-There is no such thing as a performance muffler by itself, unless your stock muffler is stupid restrictive (which it is not).
-The only way to avoid the swarm-of-bees sound on a stock 4 cylinder when modifying the muffler by itself is to keep it quiet. Otherwise you just have your choice of how loud and what the pitch is of your swarm of bees.
-Depending on where the rot is, you may have to remove a section of tubing to get to solid tubing to weld or clamp to.
-Can you weld and have access to a welder? If not then you may have a difficult time clusterfucking together clamps and hanger straps and will probably be better off paying a shop to weld up the necessary piping and hangers.